Vapor-burning furnace



(No Model.) 3 Sheets-Sheet 1. J. M. SHEPARD.

VAPOR BURNING FURNACE.

No. 349,906. Patented Sept. 28, 1886.

N. PETERS Phum-Lnhngmpher. Washingwn. 04 C.

(No Model.) 3 Sheets-Sheet 2.

J. M. SHEPARD.

VAPOR BURNING FURNACE. No. 349,906. Patented Sept. 28, 1886.

N. PETERs. Pholv-Lilhogmpher. Wflshmglun. DV 0.

(No Model.) 3 Sheets-Sheet 3.

J. M. SHEPARD.

VAPOR BURNING FURNACE.

No. 349,906. Patented Sept. 28, 1886.

W MW Jw 9MZM placed within the fire-box and arranged to UNITED STATES PATENT GFEIQE.

JAMES M. SHEPARD, OF BOSTON, MASSACHUSETTS.

VAPOR-BURNING FURNACE.

SPECIFICATION forming part of Letters Patent No. 349,906, dated September 28, 1886.

Application filed October 12, 1885.

To all whom it may concern:

Be it known that 1, JAMES M. SHEPARD, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in VaporBurning Furnaces, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to that class of furnaces in which oleaginous Vapors are mixed with water vapor, (both produced by high temperature,) and, being mixed with air, are burned conjointly, the object being to so arrange the generators that the mixture is compounded near the point of ignition, thus avoiding all danger of chemical reaction of one of the elements upon the others before combustion. I accomplish this object by the mechanism shown in the accompanying drawings, in which- Figure 1 is a vertical section showing a part of a boiler with my improved apparatus located within its fire-box, also showing a part of the outside connections. Fig. 2 is a horizontal section taken on line X X of Fig. 1. Fig. 3 is a view showing a vertical section of the fire-box and an elevation of my generating apparatus. Fig. 4 is a vertical section of my apparatus, taken on line Y Y of Fig. 2. Fig. 5 is a detail showing in vertical section one of the mixing-pipes and a steam-jet device. Fig. 6 is an enlarged section showing the compound valve which admits and governs the fiow of oil and water to my generator.

In the drawings, A, Figs. 1, 2, 3, and 4., represents the outer wall of the boiler, and A the outer casing of the fire-box of a boiler. Within this casing A,I place my generating apparatus, which consists of a system of tubes arranged to supply oil vapor, steam, and air for the purpose of producing jets of flame for evolving heat.

1V, Figs. 1, 2, and 4, represents a retort produce steam, it being supplied with water by the pipe w, Figs. 1, 2, 3, and 6, which connects it through t-He compound valve D, Figs. 1, 2, and 6, to the water-tank \V, Figs. 1 and 2.

0, Figs. 2, 3, and 4, is a retort for vaporizing oil, and is supplied by the pipe 0, Figs. 2, 3, and 6, which connects it through the com- Serial No. 179,739. (No model.)

pound valve D, Figs. 1, 2, and 6, with the oiltank 0, Fig. 2. The water vapor or steam generated in the retort Wis delivered through the pipe W Figs. 1, 2, and 8, to the annular steam-delivery pipe W, Figs. 1, 2, 3, and 4, thence to the cross steam-pipes Figs. 1, 2, 3, and4, to the jets, one of which, \V", is shown in Fig. 5. From the jet the steam passes into the pipe E, Fig. 5, and thence to the combustion-pipe E, Figs. 1, 3, and 4. The steam in passing from thejet-piece 1 75 to the 'pipe E is so arranged in connection with the said pipe E that it will throw air into the said pipe E, on the principle of the Giffard injector. Thus two parts of my compoundnamely, steam and airare introduced through the pipe E.

The oleaginous vapor is produced within the retort 0, Figs. 2, 3, and 4, said retort being supplied with oil from the tank 0, Fig. 2, as has been already stated. The vapor from this retort passes through the pipe 0, Figs. 2 and 3, to the annular pipe 0 thence to the crosspipes 0, Figs. 1, 2, 3, 4, and 5, and through the orifices 0 one of which is shown in Fig. 5, to the combustion-tubes E.

The number of the combustion-tubes and their precise location may be varied to suit the requirements of the device to which they are applied. Thus, if a great heat is required withinasmall space, then these tubes E should be placed closely together; but in case a moderate heat, distributed over a large area, is required, then the tubes may be placed much farther apart. T, Figs. 1, 2, 3, and 4, is a diaphragm placed near the top of the combustionpipe E, as shown.

I will now describe my device for proportioning and regulating the supply of oil and water to the retorts. This device is shown in an enlarged section, Fig. 6, in which D D represent the general frame or casing, and O and 1V represent, respectively, the oil and water chambers. The oilchamber 0 receives its oil from the tank 0, Fig. 2, through the pipe 0 Fig. 6, and the water-chamber 1V receives its supply from the water-tank \V, Fig. 2, through the pipe 20 Fig. 6.

D", Fig. 6, is a regulating-valve terminating in a point at 0, which may be adjusted to the orifice in the pipe 0, Fig. 6, so as to allow more or less oil to flow from the chamber 0 to the IOO pipe 0, and thence to. the retort. dis another regulating-valve having its point w, Fig. 6. This regulates-the supply of water fromthe chamber W to the pipe 20, and thence to'the water retort W. As the two regulatingvalves D and d are attached to an adjustable cross-head, D Fig. 6, by means of screws and finger-pieces D D and d d, they may be regulated so that one may leave a larger orifice than the other. For instance, the flow of water at the point w may be much larger than the flow of oil at the point 0, or, if desirable, Vice versa, while the quantity to be supplied may be regulated by raising or lowering the cross-head D by simply operating the screw D by aid of the hand-wheel D. I

For convenience in kindling-that is, farnishing preliminarily the heat required to vaporize' the oil and waterI connect with the oil-tank 0, Fig.2, a pipe, K, having branches K K These branches are perforated, K passing under the oil-retort and K under the water-retort, as shown in Fig. 2, K being a valve for admitting oil to these pipes.

L L are valves, one of which i'slocatedbetween the water-tank W and the compoundv and the compound valve D. These are tobe used when the apparatus is not working.

By the arrangement for mingling the compound which I burn, as shown in Fig. 5, I

efl'ectually prevent any communication of flame to the oil, from the fact that vapor of oil unmixed with oxygen will not burn, and there.

being no oxygen below the point M in the pipe E, Fig. 5, the flame cannot communicate with the oil-orifice 0 Therefore this arrangement insures great safety of the apparatus, as it is impossible for the flame to snap down below the point M in thepipeE.

I am aware that oleaginous vapors, steam,

and air have been previously united before secure by Letters Patent r 1. In vapor-burning furnaces, the combination of the oil-vapor supply-pipeO? O with the pipe E, said pipe E having near its ignitionend an air and steam supply pipe, E, substantially as described, and for the purpose set forth.

2. The combination of, the pipes 0 oand w ,w with theregulating-valves D d and their adjusting devices D D d d with the crosshead D and adjusting-screw D D ,.substan tially as described, and for the purpose set 1 fQI'tll.

valve D and the other between theoiL-tank 0 name to this, specification, in the presence of :two subscribing witnesses, on. this 9th day of! In testimony whereof I have signed my October, A. D. 1885. i

JAMES M. SHEPARD.

Witnesses:

FRANK G. PARKER,. ALBERT D. GRovER. 

